Definition: In this task, you are given an input list A. You need to convert all the alphabets in the list with a number representing their position in the English alphabet. E.g., replace A by 1, B by 2, a by 1, b by 2, and so on.
Input: ['415', 'l', 'Y', 'i', '701', '2961']

415, 12, 25, 9, 701, 2961